You can download it from here
This application requires .Net 4.0, Powershell 2.0 and Remote Powershell access to Exchange Server. It is tested on Windows 7, Windows 8 and Windows 2008 R2.
Yet, it’s still in beta. I tested in my LAB and it’s pretty good. List of reports you can get from this tool:
Single Group Information
Single Mailbox information
Admin Audit Log (coming soon)
Mailbox Audit Log (Coming soon)
Environment Report (Coming soon)
Here is how Mailbox report looks like.
Email notification feature will also be included in coming update.